ASTM C1861-23A
Standard Specification for Lathing and Furring Accessories, and Fasteners, for Interior and Exterior Portland Cement-Based Plaster
| Standard number: | ASTM C1861-23A |
| Released: | 01.10.2023 |
| Status: | Active |
| Pages: | 11 |
| Section: | 04.01 |
| Keywords: | adhesive; casing bead; cement plaster; control joint; corner reinforcement; drainage screed; expansion joint; fastener; furring accessory; lathing accessory; nail; screw; staple; U-Channel furring; weep screed; |
| ASTM number: | ASTM C1861 |
| Supersedes: | C1861-23 |
This specification covers the minimum requirements for lathing and furring accessories and fasteners used as components of interior and exterior portland cement-based plaster assemblies for facilitating lathing and furring installation, cement plaster application, and functionality of the completed stucco cladding assembly. Lathing and furring accessories, and fasteners shall be free of deleterious amounts of rust, oil, or other foreign matter that could cause bond failure or unsightly discoloration; shall include key attachment flanges or solid attachment flanges; and shall be configured to accommodate application of the specified cement plaster thickness. Lathing accessories serving a drainage function shall include a drainage surface and a solid attachment flange. lathing accessories to facilitate drainage include weep screed, designated drainage screed, and perforations; lathing accessories to reinforce corners include internal corner reinforcement and external corner reinforcement; lathing accessories to reduce cracking include expansion joint and control joint; furring accessories include rod hanger, strap hanger, cold-rolled channel furring, and Z-furring.
1.1 This specification contains the minimum requirements for lathing and furring accessories, and fasteners, as components of interior and exterior portland cement-based plaster assemblies, used to facilitate lathing and furring installation (Specifications C1063, C1787), cement plaster application (Specification C926), and functionality of the completed stucco cladding assembly.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.